Time Phase Data (project assignment and date) through the API

Solved it myself. But now I have a new question. 

This works: 

 curl -X POST "https://api.clarizen.com/V2.0/services/data/query" -H "Authorization: ApiKey MyKey" -H "Content-Type: application/json" -d '{
    "q": "SELECT ProjectAssignment, Date, WorkItem.SYSID, WorkItem.Name, User.Name, User.RevenueRegularRate FROM RLTimePhaseMonthly",
    "paging": {
        "offset": 0,
        "limit": 10
    }

But this doesn’t (contains a WHERE filter): 
 

curl -X POST "https://api.clarizen.com/V2.0/services/data/query" -H "Authorization: ApiKey MyKey" -H "Content-Type: application/json" -d '{
    "q": "SELECT ProjectAssignment, Date, WorkItem.SYSID, WorkItem.Name, User.Name, User.RevenueRegularRate FROM RLTimePhaseMonthly WHERE User.RevenueRegularRate > 0",
    "paging": {
        "offset": 0,
        "limit": 10
    }
}'

Anyone know why????